November 2000 - Zope

Re: Is data.fs corrupted?
by Darcy Clark 08 Nov '00

08 Nov '00

Alexander, we encountered a similar error (i.e. Could not load oid + broken products etc....) a while back on our install of 2.1.6 on Windows. We first tried deleting all products gradually in the hope that we could trace which one of them had caused the 'corruption', but to no avail. The error would not go away even after we had essentially deleted everything from the Zope installation other than the basic products. The only way we solved the problem was by upgrading to 2.2.2 and then manually importing all products and content into the new Zope installation :( If I am not mistaken this problem has been reported several times to this list with essentially the same reported symptoms. Darcy --- In zope(a)egroups.com, Alexander Chelnokov <alex@o...> wrote: > Hello All, > > After a linux machine crash or cold restart something strange is going > on with Zope (2.2.2) - all objects built on ZClass-based products like > Yihaw or QSurvey are broken. Products are in Product folder, and i > even can add an object and it works, but when i try to access it in a > new browser window it reports > ========== > This object is broken because the unknown product that created it is > no longer installed or is installed incorrectly. Please contact your > product vendor for assistance. > Note that the data associated with this product has not been lost, and > will be accessible again if the product is reinstalled. > ========== > > Well, i removed QSurvey and tried to re-install its current version - > something goes wrong again: > > ========== > Zope Error > Zope has encountered an error while publishing this resource. > > Error Type: Could not load oid ={, pickled data in traceback info may > contain clues > Error Value: None > ========== > > Is there any way to fix ZODB less radical than complete reinstall? > > -- > Best regards, > Alexander N. Chelnokov > Ural Scientific Institute of Traumatology and Orthopaedics > 7, Bankovsky str. Ekaterinburg 620014 Russia > ICQ: 25640913 > > > > _______________________________________________ > Zope maillist - Zope@z... > http://lists.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope-dev )

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Tar Ball with all Zope-Howtos
by Manuel Gutierrez Algaba 08 Nov '00

08 Nov '00

Is there such a best ? I email zope admin and he kindly pointed me to a site where I could download a .pdf with all Howtos. Is there the _real_ .tar.gz ? Thanks zope admin and thank you guys. BTW, what means things like " _.method()" In pure python the "_" has not special sense, what object is "_" ? -- Regards/Saludos Manolo www.ctv.es/USERS/irmina /TeEncontreX.html /texpython.htm /pyttex.htm /cruo/cruolinux.htm ICQ:77697936 (sirve el ICQ para algo?)

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Product removal stress: a plea for help
by seb bacon 08 Nov '00

08 Nov '00

If anyone can shed some light on this it would be a great help to the newbies out here. Perhaps I could even do a HOWTO, and lighten the load on the list considerably ;) I don't have a solution to Alexander's problem quoted below, but it's one I keep hitting and one that is frequently asked on this list. In fact it's one I recently asked for more info on, to no avail. So I thought I'd add my voice to the clamour. Deleting products seems to be a very risky business in Zope. Things apparently get left behind in the ZOBD which shouldn't be there. If I delete a product that was used at some point elsewhere, I don't just get broken objects, I get pickled data streaming out of my Zope most of the time. Today I had an interesting one: I thought I had cleaned up thoroughly after an unwanted product, and I was getting no error messages and no pickled junk on stderr. The only thing I couldn't do is add ZClasses, for which I got the error message quoted by Alexander below (could not load object oid=[random character]). Please, can any Master Zopician give an explanation: 1) what causes this kind of error? 2) how do you debug it? 3) how do you fix your Data.fs? Thanks! Seb. * Alexander Chelnokov <alex(a)orto.unets.ru> [001108 18:21]: > Hello All, > > After a linux machine crash or cold restart something strange is going > on with Zope (2.2.2) - all objects built on ZClass-based products like > Yihaw or QSurvey are broken. Products are in Product folder, and i > even can add an object and it works, but when i try to access it in a > new browser window it reports > ========== > This object is broken because the unknown product that created it is > no longer installed or is installed incorrectly. Please contact your > product vendor for assistance. > Note that the data associated with this product has not been lost, and > will be accessible again if the product is reinstalled. > ========== > > Well, i removed QSurvey and tried to re-install its current version - > something goes wrong again: > > ========== > Zope Error > Zope has encountered an error while publishing this resource. > > Error Type: Could not load oid ={, pickled data in traceback info may > contain clues > Error Value: None > ========== > > Is there any way to fix ZODB less radical than complete reinstall? > > -- > Best regards, > Alexander N. Chelnokov > Ural Scientific Institute of Traumatology and Orthopaedics > 7, Bankovsky str. Ekaterinburg 620014 Russia > ICQ: 25640913 > > > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://lists.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope-dev ) >

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ZCatalog scalability?
by J�lio Dinis Silva 08 Nov '00

08 Nov '00

Does anyone has a Catalog with more than 1500 items catalogued? If yes does anyone can do searches to this Catalog in a resonable time without freezing ZServer until it ends? Thanks, Júlio Silva _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com.

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Job Tracking Product
by Andy McKay 08 Nov '00

08 Nov '00

Anyone seen a product to track jobs, similar to a bug tracking product (Collector, Itrack etc) but more focused on resources, timelines, completion rate etc...? Had a look on Zope.org and managed to miss it if there is one. TIA -- Andy McKay, Developer. ActiveState.

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FW: [Zope] adding properties to all existing docs
by michael angelo ruberto 08 Nov '00

08 Nov '00

hi Dieter, thanks for the advice. i have written a small DTML script which i plan to call from the standard html header so that the intranet users will unknowingly populate the docs as they browse. saves me from doing it manually unless there are file objects in the folder. here is the script: <dtml-in "PARENTS[0].objectItems(['File','DTML Document'])" sort=title> <dtml-unless "_.string.find(_['id'],'index_html')==0"> <dtml-comment> properties are added in the unless below. to add additional properties to this script repeat the unless block for each new property and change the id and type to what you want to add. </dtml-comment> <dtml-unless "hasProperty('rev')"> <dtml-call "manage_addProperty('rev','none','string')"> </dtml-unless> </dtml-unless> </dtml-in> to run the script give it manager role and call the method in the URL or with a <dtml-var> tag. you can select the types of objects it "sees" in the first line. please let me know if there is some flaw in doing it this way. take care -<mike>- ps: i tried to make a python method for this but couldn't figure out how to handle the objects properly. -----Original Message----- From: Dieter Maurer [mailto:dieter@handshake.de] Sent: Sunday, November 05, 2000 12:49 PM To: michael angelo ruberto Cc: zope(a)zope.org Subject: Re: [Zope] adding properties to all existing docs michael angelo ruberto writes: > i have a Zope containing 4700+ files and documents. i want to add new > properties to all of them, how can i do this programmatically? is it > possible to change the base classes? if so, how? It is possible to change the base class but I would not do it (as it affects all Zope objects and your change is likely to disappear when you upgrade). You can automate Zope either internally or externally. Internally (via a method (DTML or Python)) you would use ZopeFind to list all objects that need to be updated and then iterate (dtml-in) over the objects to update. Externally, you would use "ZPublisher.ZClient". I would go for the internal solution. Dieter

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Pre-newbie question: how to implement this app?
by Don Dwiggins 08 Nov '00

08 Nov '00

I'm calling this a "pre-newbie" question because I'm not running Zope yet, although I've been looking into it for some time, and have recently started reading in earnest. I have an application that I think would be a good initial app for getting into Zope, and I'd like some advice on how to go about it. It's a basic task list management system for a small group of developers, and it has the following characteristics: - There are two main entities: Task and Person. The relationship between them is many-to-many (a person may be assigned to multiple tasks, a task may have multiple people assigned). - There will be a relatively small number of tasks and people. - Tasks will be added, removed, and modified frequently; people less so. - When a task or person is removed, integrity should be maintained by removing assignments involving the removed entity. - I'll start with a couple of basic views that let people see the tasks, their status, assignments, priorities, etc. Later, there'll probably be more. - I want to be able to add attributes to both entities at will. - Initially, I'll be maintaining the list, but I'd like to add the capability for people to sign up for tasks, and to change the status of tasks they're assigned to. - Security isn't an issue here, but avoiding blunders is. Questions: - What are the pros and cons of storing the entities in the ZODB vs. a relational DB? - How best to represent the many-to-many relationship? (Usually, in a relational DB, I'd use a relationship table such as PersonTaskAssignment.) In particular, how does Zope handle references between independent objects? - What Zope products should I consider using to aid in the implementation? - Is there already an app like this that I could adapt? Thanks for any good words you can offer, Don Dwiggins Competitive Knowledge, Inc.

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String to Object
by Leichtman, David J 08 Nov '00

08 Nov '00

Does anyone now how I might take a string and turn it into an object reference in DTML? By that, I mean, I want to take a string like: 'object.subobject.subobject' from a database, and I want to reference it as <dtml-var object.subobject.subobject>. I think this is a simple, straightforward thing, but I've been wracking my brain over it.

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RE: [Zope] Can't delete products
by Stephan Goeldi 08 Nov '00

08 Nov '00

Is it save to simply delete a folder in Products? >From: Max Møller Rasmussen <maxm(a)normik.dk> >To: "'stephan.goeldi(a)datacomm.ch'" <stephan.goeldi(a)datacomm.ch>, >"'zope(a)zope.org'" <zope(a)zope.org> >Subject: RE: [Zope] Can't delete products >Date: Wed, 8 Nov 2000 16:28:00 +0100 > >From: Stephan Goeldi [mailto:stephan_goeldi@hotmail.com] > > >I deleted some products in Control_Panel several times. Some are gone >(ok), > > >some stay and seem to be undeletable. I'm sure someone shows me the way >to > >delete it from the command line (it's Zope 2.2.2 on RedHat Linux). > >You should also delete the products from your product directory. > >Maybe that is the problem? > >regards > Max M > > >_______________________________________________ >Zope maillist - Zope(a)zope.org >http://lists.zope.org/mailman/listinfo/zope >** No cross posts or HTML encoding! ** >(Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope-dev ) > _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com.

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Python ZMethod (was Python Zope Method as option for renamed Python Method?)
by Hamish Lawson 08 Nov '00

08 Nov '00

I suggested the term Zope Method for anything Zope regards as a method, giving Python Zope Method, Perl Zope Method, DTML Zope Method, SQL Zope Method, etc. But Chris Withers thought those to be too long and unwieldy. OK, what about ZMethod? Thus Python ZMethod, Perl ZMethod, DTML ZMethod, SQL ZMethod. I was quite favourably disposed toward Operation, but I wanted to keep 'method' somehow as it I felt it better brought out the acquisition aspect. Hamish ____________________________________________________________ Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie

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